Updated: Dec 15, 2025
Location and Projects
Address
PO Box 1834, Danville, CA, 94526
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Deng Design Studio Construction
Serving Danville and the greater East Bay for over three decades, Deng Design Studio brings 35 years of experience to residential and commercial architectural projects. The studio specializes in custom home design, home additions, remodels, and tenant improvements, collaborating closely with clients to deliver tailored solutions for their spaces. With a project portfolio that includes kitchen and bathroom remodels, single-family homes, and small commercial developments, the firm is equipped to address a wide range of architectural needs. Deng Design Studio works with homeowners, property managers, and business owners throughout Contra Costa County, providing site analysis, schematic design, permit drawings, and construction documents as part of a comprehensive architectural service. Each project benefits from a methodical design process rooted in decades of industry practice.
Deng Design Studio Services
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Deng Design Studio Contact Information
Phone Number: (925) 235-0808
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Address: PO Box 1834, Danville, CA 94526
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Deng Design Studio Danville
Quality
105
92nd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Deng Design Studio has a BuildZoom score of 105, which places them above 92% of 336,931 contractors in California.
Activity
|
15 projects
|
2025 |
|
9 projects
|
2024 |
|
8 projects
|
2023 |
Our building permit records indicate that Deng Design Studio has worked on at least
32.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
19 projects
|
Home Additions |
|
6 projects
|
New Constructions |
|
8 projects
|
Multi-room remodels |
|
5 projects
|
Kitchen remodels |
Analyzing permits over the last 4 years shows that Deng Design Studio mostly works on
home addition
and multi-room remodel
projects.
Pricing
|
1 project
|
< $5k |
|
1 project
|
$5k-$20k |
|
5 projects
|
$20k-$50k |
|
1 project
|
$50k-$100k |
|
17 projects
|
$100k-$250k |
|
6 projects
|
$250k-$500k |
|
1 project
|
$500k-$1mil |
The typical size of their permits is approximately $170,000. This graph shows the distribution of these job values.
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Addition of 1 129 sf for new family/dining room (1) powder room laundry room and master bedroom with bathroom and walk-in closet. relocate kitchen with new pantry island and wet bar
Valuation:
$265,750
Permit #:
BLD2025-04308
Status:
issued
Fee:
$12,068
Permit Type:
Addition
Building Type:
N/A
Addition of 688 s.f. to rear left & front side of residence & reconfigure (e) layout. to construct 422 s.f. attached garage & 31 s.f. porch. creating 4bed 3bath residence
Valuation:
$450,000
Permit #:
BLD2025-01486
Status:
issued
Fee:
$13,777
Permit Type:
Addition
Building Type:
N/A
Single story rear addition (212 sq. ft.) to existing front unit on a lot containing 2 detached dwelling units. interior remodeling of the entire existing house (1047 sq. ft.) the proposed alteration to front unit would result in the reduction from 3 bedrooms to 1 bedroom. replace (e) tank water heater with (n) tankless water heater outside bedroom. install (n) furnace in attic. [xxx g... see more
Valuation:
$281,404
Permit #:
BD-2022-284313
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Tear down/rebuild: addition of 997 s.f. w 105 s.f. covered porch. & reconfigure (e) layout. 200 amp panel upgrade. creating 4bed 3bath residence
Valuation:
$350,000
Permit #:
BLD2026-00123
Status:
approved - pending plans/docs
Fee:
$5,236
Permit Type:
Addition
Building Type:
N/A
Addition of 386 sq ft. remodel of 598 sq. ft by converting living room to master suite and remodeling (e) kitchen. 12 sq.ft. garage extension. (n) 24.5 covered porch. 3 bed/2 bathroom
Valuation:
$140,000
Permit #:
BLD2025-02261
Status:
complete
Fee:
$6,243
Permit Type:
Addition
Building Type:
N/A
To construct 999 s.f. attached adu. creating 2bed 2bath unit
Valuation:
$220,000
Permit #:
BLD2026-00013
Status:
approved - pending plans/docs
Fee:
$5,091
Permit Type:
New accessory dwe...
Building Type:
N/A
Construct a new 550 sqft detached adu
Valuation:
$130,000
Permit #:
BL-NRES-2025-00012
Status:
issued
Fee:
$22,681
Permit Type:
N/A
Building Type:
N/A
Construct a 2-story nsfd (4bed/4.5bath): r3=2573.6 s.f u=434 s.f u=59 s.f. (porch)
Valuation:
$700,000
Permit #:
BLD2024-07213
Status:
issued
Fee:
$18,577
Permit Type:
New single-family...
Building Type:
N/A
No Description Available
Valuation:
$364,170
Permit #:
BLD2025-0067
Status:
issued
Fee:
$13,147
Permit Type:
Addition and alte...
Building Type:
N/A
Drl: (pcr r/s) construct a new attached 799 sqft. adu to the existing main house. concurrent pln2022-00278
Valuation:
$150,000
Permit #:
BLD2022-05997
Status:
complete
Fee:
$6,441
Permit Type:
N/A
Building Type:
N/A
Construct (r3) 999sqft. detached adu and (u) 20sqft porch (3bed/2bath unit). (n) 200 amp electrical panel (n) ess
Valuation:
$250,000
Permit #:
BLD2025-00127
Status:
issued
Fee:
$11,562
Permit Type:
New accessory dwe...
Building Type:
N/A
Construct new approx. 497sf one-story addition. full interior reconfiguration of existing layout and remodel. addition will addition (1) bedroom and (1) bathroom. demolish existing 25sf covered porch and construct a new approx. 53sf covered porch. convert 6sf of garage to living area. upgrade electrical meter to 200amp. mep work per new construction ***field rev sub 1 9/23/24 - decrea... see more
Valuation:
$220,000
Permit #:
B24-0782
Status:
issued
Fee:
$8,035
Permit Type:
N/A
Building Type:
N/A
Convert 1 of 2 existing 2-car garages into an adu (390 sf) attached to the rear 2-story single family dwelling. *this property currently has two single family dwelling units and this permit adds an adu.* deferred submittal: modification of (e) automatic fire sprinkler system for new adu required prior to frame. pa-2021-023 no planning rough and planning final required for the adu. tn
Valuation:
$176,540
Permit #:
BD-2024-292827
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition of 582 sf to front of residence to construct 2bed/1bath & living room. to convert (e) bed to laundry room/pantry & remodel master room. creating 4bed/3bath residence
Valuation:
$200,000
Permit #:
BLD2024-04305
Status:
issued
Fee:
$4,778
Permit Type:
Addition
Building Type:
N/A
Upgrade the existing electrical meter and main panel to 200-amp for the primary house
Valuation:
$3,000
Permit #:
BLD2025-04736
Status:
issued
Fee:
$155
Permit Type:
N/A
Building Type:
N/A
Construct a 828 sf (2bed/2bath) attached adu. upgrade main panel to 200amp. **revised layout and increased square footage after designer change. (ccr2023-00188)
Valuation:
$210,000
Permit #:
BLD2023-10288
Status:
issued
Fee:
$11,123
Permit Type:
N/A
Building Type:
N/A
attached adu
construct a new attached 749 sqft. adu in back of home (2bed/2bath).
Valuation:
$170,000
Permit #:
BLD2024-03814:
Status:
Issued
Fee:
$365
Permit Type:
N/A
Building Type:
N/A
Construct a 1000 sf (3bed/2.5bath) detached adu
Valuation:
$230,000
Permit #:
BLD2024-03806
Status:
issued
Fee:
$11,248
Permit Type:
N/A
Building Type:
N/A
Addition of 807 sf for (2) bedrooms (1) bathroom; extend existing (2) bedrooms. remodel bathroom. install furnace in attic. install new ev charger in garage. relocate and upgrade msp to 200amp
Valuation:
$200,000
Permit #:
BLD2022-09823
Status:
issued
Fee:
$5,597
Permit Type:
Addition
Building Type:
N/A
Interior remodel - reconfigure and swap the existing master bedroom and (1) existing bedroom. relocate master bathroom and addition a walk-in closet. new windows to rear and left side of house
Valuation:
$25,000
Permit #:
B25-1486
Status:
approved partial
Fee:
$678
Permit Type:
N/A
Building Type:
N/A
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Deng Design Studio License info
License Not Required
| Status | Not Required |
- BuildZoom verified in June, 2021 that this contractor does not need a license to be a contractor in California.
This is a sample of licensing data; click here to access a complete history.
105
BuildZoom Score
61
Permits
- Building permit records show that Deng Design Studio has worked on 61 permitted projects.